What was found
JUST AFTER TAKEOFF CREW NOTICED WX RADAR WAS NOT PAINTING ANY STORMS THEN RED DOTS BEGAN TO DISPLAY ON THE RADAR. AFTER TALKING WITH DISPATCH WITH DISPATCH AND WITH THUNDERSTORMS ON THEIR ROUTE OF FLIGHT, RETURNED TO LGA.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
JUST AFTER TAKEOFF CREW NOTICED WX RADAR WAS NOT PAINTING ANY STORMS THEN RED DOTS BEGAN TO DISPLAY ON THE RADAR. AFTER TALKING WITH DISPATCH WITH DISPATCH AND WITH THUNDERSTORMS ON THEIR ROUTE OF FLIGHT, RETURNED TO LGA.